ERNIE 4.0 / 4.5 class is a Flagship from Baidu ERNIE (China).
One-line fit: best used for Chinese language apps, Baidu ecosystem.
Key specifications
| Provider | Baidu ERNIE |
|---|---|
| Model | ERNIE 4.0 / 4.5 class |
| Type | Flagship |
| Context window | Large |
| Pricing (indicative) | Baidu Cloud |
| Company category | Hyperscaler |
| Region | China |
| Official site | https://yiyan.baidu.com |
Benchmarks and public standing
Top CN domestic leaderboards historically
Treat scores as directional. SWE-bench, Terminal-Bench, LMSYS Arena, Artificial Analysis, and vendor cards use different harnesses and are not always comparable 1:1. Re-check the latest official model card before decisions.
What this model is good at
Chinese language apps, Baidu ecosystem
This aligns with Baidu ERNIE’s broader strengths:
- CN search integration
- Enterprise China cloud
- Wenxin large models
Limitations and watch-outs
Less open global developer mindshare
- Rate limits, regional availability, and data retention policies vary by plan.
- Agent harness quality (Cursor, Claude Code, Codex, custom tools) can change outcomes more than raw model Elo.
- Open-weight availability (if any) is separate from hosted API quality and safety filters.
Ideal users
- Product engineers shipping features that match: Chinese language apps, Baidu ecosystem
- Teams standardizing on the Baidu ERNIE ecosystem
- Agent builders who need a Flagship
When to pick something else
- Cheaper volume: compare lower tiers from the same lab or open Chinese/EU alternatives.
- Maximum hard SWE thoughtfulness: compare Claude Fable-class and other coding flagships.
- Giant multimodal corpora / Workspace: compare Gemini-class models.
- Self-host / open weights: Llama, Qwen, DeepSeek, GLM, Mistral open lines.
Parent company
Baidu ERNIE – Search giant; ERNIE Bot and Qianfan platform for China enterprise AI.
Related models from Baidu ERNIE
- ERNIE Speed / Lite / X1 – Tiered
Data is curated for AIForumSphere model directory mid-2026 directional figures.
